TY - CONF AV - none KW - Biomass; Carboxylation; Catalysts; Chemical reactors; Zeolites KW - Biomass pyrolysis; Catalytic pyrolysis; Catalytic upgrading; Deoxygenations; Fixed bed reactor; Pyrolysis oil; Yield; Zeolite structure KW - Catalytic cracking SP - 793 TI - The Role of Zeolite Structure and Acidity in Catalytic Deoxygenation of Biomass Pyrolysis Vapors ID - scholars6230 N2 - Catalytic upgrading of paddy husk was performed over 10-MR zeolites (MCM-22, ITQ-2 and ZSM-5) in a drop type fixed-bed reactor. This work investigated the role of structure and acidity of zeolites on pyrolysis-oil yield and degree of deoxygenation. Catalytic pyrolysis experiments were carried out at the catalyst/biomass ratio (0.05-0.5) at temperature of 450°C. The oil yield decreased by using catalyst and this decrease oil yield is attributed to catalytic cracking of bio-oil vapor on the catalyst. The route for deoxygenation of pyrolysis vapors was identified to be dehydration, decarboxylation and decarboxylation. ITQ-2 showed high degree of deoxygenation as compare to MCM-22 which is due to more accessible external active sites of ITQ-2. The organics yield in pyrolysis oil was highest with ZSM-5 in comparison with other zeolites. © 2015 The Authors. Published by Elsevier Ltd. N1 - cited By 37; Conference of 7th International Conference on Applied Energy, ICAE 2015 ; Conference Date: 28 March 2015 Through 31 March 2015; Conference Code:114863 SN - 18766102 PB - Elsevier Ltd Y1 - 2015/// VL - 75 EP - 800 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947067761&doi=10.1016%2fj.egypro.2015.07.126&partnerID=40&md5=fe9b50c0ca2cd75493872bab760620a5 A1 - Naqvi, S.R. A1 - Uemura, Y. A1 - Yusup, S. A1 - Sugiur, Y. A1 - Nishiyama, N. A1 - Naqvi, M. ER -